CN1133463A - Colour plane plate display device and image information processing method - Google Patents

Colour plane plate display device and image information processing method Download PDF

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CN1133463A
CN1133463A CN 95120503 CN95120503A CN1133463A CN 1133463 A CN1133463 A CN 1133463A CN 95120503 CN95120503 CN 95120503 CN 95120503 A CN95120503 A CN 95120503A CN 1133463 A CN1133463 A CN 1133463A
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data
color
image information
display device
display
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CN 95120503
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Chinese (zh)
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宫泽邦明
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青木一男
五味康明
三光投资有限公司
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Priority to US08/546,330 priority patent/US6078304A/en
Application filed by 青木一男, 五味康明, 三光投资有限公司 filed Critical 青木一男
Publication of CN1133463A publication Critical patent/CN1133463A/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406Control of illumination source
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3685Details of drivers for data electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235Field-sequential colour display
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007Display of intermediate tones
    • G09G3/2018Display of intermediate tones by time modulation using two or more time intervals

Abstract

根据本发明涉及的彩色平板显示装置,把图像信息变换成在图像帧内依次切换R、G、B各色的色数据的串行数据,进而,在R、G、B各色的彩色帧内以显示帧周期多次重叠记录一个画面的成像数据,间断地分成多次来驱动液晶,所以,与连续地驱动液晶的情况相比,使液晶的动作速度高速化,确保了大的动作量,其结果可以在短的各彩色帧内获得高对比度的图像,并且通过调整重叠记录的次数可以实现灰度表现。 Color panel display device according to the present invention, the image information is sequentially switched into R, G, and B colors of the color data of the serial data in the image frame, and further, the R, G, B colors to display the color frame frame period a plurality of times to overlap the recording data of one screen image, is divided into a plurality of times intermittently drives the liquid crystal, so compared to the case of continuously driving the liquid crystal, the liquid crystal operation speed increases, to ensure the operation of a large amount, as a result high-contrast images can be obtained in a short frame of each color and gradation representation can be realized by adjusting the number of overlapping records.

Description

彩色平板显示装置及图像信息处理方法 Color panel display apparatus and an image information processing method

本发明涉及一种彩色平板显示装置,特别是涉及具有下述显示部和R、G、B各色背光光源的彩色平板显示装置,上述的显示部由根据图像信息所驱动而变化透光率的多个像素所构成,上述R、G、B各色背光光源可以根据该图像信息分别独立地进行导通截止控制。 The present invention relates to a color flat panel display device, particularly to a display unit and having the following R, G, B color flat panel color display backlight light source device of the display unit is driven according to image information by a plurality of light transmittance varies the pixels constituting the R, G, B colors of the backlight light source may be controlled to be turned off according to the image information are independently performed.

近年来,随着个人计算机等OA机器和电视等家电产品轻量、薄型化,对显示装置要求轻量化、薄型化。 In recent years, as personal computers, OA devices and TV appliances lightweight, thin, lightweight display device according thinner. 由此,进行液晶显示装置(LCD)等轻量、薄型的平板型显示器的开发,作为现在普及的CRT的替代品。 Thereby, a lightweight liquid crystal display device (LCD), etc., the development of thin flat type display, CRT is now being widely used as alternatives.

可以举出全彩色化来作为在这些平板型显示器上所要求的一个技术项目。 Can include full-color as a technical project on these flat panel type displays are required. 例如,TFT方式的彩色LCD,通过采用有源矩阵方式来实现彩色化。 For example, a color LCD TFT mode, is achieved through the use of a color active matrix. 根据该TFT方式,即使以点单位进行脉冲驱动,由于电容器能保持存储效果,就可以进行高能率驱动,就能提供对比度优良的LCD。 According to this TFT system, even when the driving pulse in dot unit, the capacitor can be maintained since the memory effect, can be driven high energy rate, we can provide an excellent contrast of LCD. 但是,由于需要VGA规格多的TFT,则迄今为止仍存在成本高和制造成品率差的问题。 However, due to the need VGA specifications of the TFT, it is still far higher manufacturing costs and the yield is poor.

另一方面,在STN方式中,通过采用单纯矩阵方式来实现彩色化,而成功地提供低成本的彩色LCD。 On the other hand, in the STN mode, the color is achieved by employing a simple matrix of, and succeeded in providing a low cost color LCD. 但是,帧速度滞后而易于发生混色,就有对比度差的问题。 However, the frame rate easily lag mixing problems have poor contrast. 因而,为了实现高对比度和高速帧显示,而提出了例如双矩阵电极驱动方式和时分驱动方式等各种驱动方式。 Accordingly, in order to achieve high contrast and high-speed frame display, for example, it has been proposed various driving mode and the double matrix electrode driving system like a time-division driving system. 并且,提供使小脉冲分散来代替大选择脉冲,同时扫描全部线,在不降低解像度的情况下试图实现高对比度和高帧显示的有源寻址驱动方式。 And, provided that the dispersing small pulses instead of large selecting pulses, while all the scan lines, active addressing drive method attempts to achieve high contrast and high frame display without reducing the resolution.

但是,现有彩色的LCD,无论TFT方式还是STN方式,多半采用由R(红)、G(绿)、B(蓝)三原色组成的滤色器的滤色方式。 However, the conventional color LCD, STN or TFT system regardless of mode, most of the use of the color mode R (red), G (green), B component (Blue) of color filters of primaries. 由此,例如在点亮R的情况下,通过使R的区域透光而G、B的区域不透光来进行颜色显示。 Thus, for example, when the lighting of R, R, by the light-transmitting region G, B of the opaque region to display color. 但是,即使简单地考虑,在滤光方式的情况下,由于需要分别对应每个R、G、B区域的像素,就必须驱动白黑显示时的三倍像素。 However, even when simply considering, in the case where the optical mode, since each pixel R, G, B respectively corresponding to areas needed, it must be driven at three times the pixel black and white display. 由此,为了得到高解像度的图像,既要求进行极细微的加工,又驱动技术复杂化,并且必须提高滤光器本身的透光率,而且难于进行彩色平衡调整等,存在很多需要解决的问题。 Thus, in order to obtain a high-resolution image, only requires a very fine processing technology and complicates the drive, and the filter itself must be increased light transmittance and color balance adjustment is difficult, there are many problems to be solved .

因而,最近,如特开平4-338996号公报所公开那样,提出了通过依次周期地点亮R、G、B各色的各个独立光源,与该点亮周期同步地施加分别对应于各像素的色信号,来利用能够获得全彩色图像的R、G、B各色光源的三色背光方式的彩色平板显示器。 Thus, recently, as Laid-Open No. 4-338996 Publication discloses, as proposed by sequentially lit period R, G, B colors of the individual light sources, respectively applied to the pixels corresponding to each color in synchronization with the lighting period signal can be obtained by using a full-color image R, G, color flat panel displays of the three-color backlight system B colors of light.

但是,在现有的滤色方式中,由于能够对R、G、B信号进行并行数据的原样处理,则在例如以R信号显示高亮度的图像的情况下,同G信号、B信号的动态无关,通过利用LCD驱动电路中的电容器的存储效果,就能够在像素的R区域重叠记录图像数据,而能够容易地获得高对比度的彩色图像。 However, in the conventional filter, since the process can be performed as parallel data of R, G, B signals, for example, in the case of displaying an image with high luminance signals of R, G with the dynamic signal, B signal, regardless of the memory effect by using the LCD driving circuit capacitor, it is possible to record the image data in the overlap region R of the pixel, and a color image can be easily obtained with high contrast.

但是,在三色背光方式中,当把彩色图像信息变换成R、G、B各色图像信息以预定时间周期依次切换的串行数据之后,通过与各色串行数据的切换周期同步来依次点亮R、G、B各色的背光,而实现彩色化。 However, the three-color backlight embodiment, after converting the color image information into R, G, B color image information of the serial data at a predetermined time period are sequentially switched by the switching period of each color serial data are sequentially turned on in synchronization R, G, B colors of a backlight, of a color is achieved. 为此,如图11所示,例如是以R信号显示高亮度图像的情况下,对于由R信号使预定像素区域的液晶导通来说,在下个周期中由G信号、B信号使之关断,因而不能获得高透光量,而不能得到高对比度的彩色图像。 For this purpose, as shown in FIG. 11, for example, the R signal is displayed at a high brightness of the image, so that the predetermined signal for the R pixel region of the liquid crystal is turned on, the next cycle of the signal G, B signals off so off, and therefore can not obtain a high amount of transmitted light, a color image can not be obtained and high contrast. 而且,所涉及的动作特性,在以STN方式实现彩色化的情况下,特别显著地显露出来,因而希望找到解决方法。 Moreover, the operating characteristics involved in the case of color STN manner, in particular significantly exposed, and thus hope to find a solution.

本发明就是鉴于面对要以三色背光方式实现平板显示器的彩色化的情况的上述问题而提出的,因此,本发明的目的是提供一种新颖和改进的彩色平板显示装置,通过改善像素的驱动信号,可以提高各像素的帧响应性能而得到高对比度的彩色图像,特别适合于STN方式的LCD。 In view of the above problems the present invention is the color of the face of the case to realize a flat panel display of a three-color backlight system proposed, therefore, an object of the present invention is to provide a novel and improved color panel display device, by improving the pixel driving signal can be enhanced color image frames in response to each pixel of the high-contrast performance, especially for LCD STN mode.

本发明的另一个目的是提供一种新颖和改进的彩色平板显示装置,能够高速地展开图像信息,而谋求对于LCD的信息传输速度的高速化。 Another object of the present invention is to provide a novel and improved color panel display device, the image information can be deployed at high speed, and high speed seek for information transmission rate of the LCD.

为了解决上述课题,本发明提供一种新颖的和改进的三色背光方式的显示装置,其中包括由根据图像信息来驱动并变化透光率的多个像素所构成的显示部和能够根据该图像信息各自独立地进行通断控制的R、G、B各色背光光源。 In order to solve the above problems, the present invention provides a novel and improved display device of three-color backlight system, wherein the display unit includes a plurality of pixels and is driven in accordance with change of the light transmittance of the image information can be formed based on the image and information independently on-off control of the R, G, B color backlight source. 根据本发明的第一观点,最好在上述显示装置中设置:把彩色图像信息变换成R、G、B各色图像信息以预定时间周期依次进行切换的串行数据的装置;把各时间周期内的R、G、B各色的串行数据变换成驱动各个预定范围内的许多像素的R、G、B各色成像数据的装置;根据R、G、B各色的成像数据在各时间周期内多次重复驱动位于预定范围内的许多像素的装置。 According to a first aspect of the present invention is preferably provided in the display device: the color image information into R, G, B color image information in a predetermined period of time serial data switching means sequentially; the time for each cycle the R, G, and B components of the serial data into a plurality of pixels within a respective predetermined range of R, G, and B color image forming apparatus to drive the data; imaging data according to respective colors R, G, B in each time period a plurality of times driving means repeated a number of pixels located within a predetermined range. 在这种情况下,最好进一步设置根据从图像信息所获得的灰度信息在各时间周期内控制驱动在预定范围内的多个像素的次数的装置。 In this case, the number of the device according to the gradation information obtained from the image information control drives the plurality of pixels within a predetermined range in each time period is preferably further provided.

根据本发明的另一个观点,在上述显示装置中,设置:把彩色图像信息变换成以预定时间周期依次切换R、G、B各色图像信息的串行数据的装置;把各时间周期内的R、G、B各色串行数据并行展开成L个的第一数据总线装置;通过对预定范围内的M×N个像素分别依次地把对应于各像素的L个并行数据同时写入L个地址,来存储由M×N个像素信息组成的L个成像数据的存储装置;从L个成像数据中选择K个成像数据的选择装置;从存储装置把所选择的K个成像数据分别分成N次每次读出M个像素信息的第二数据总线装置,由所读出的K个成像数据把预定范围内的M×N个像素在时间周期内驱动K次的驱动装置。 According to another aspect of the present invention, in the display device, is provided: the color image information into a predetermined period of time to R, G, B color image information apparatus of the serial data are sequentially switched; to R in each time period , G, B colors to expand the serial data into L parallel to the first data bus means; sequentially through each corresponding to each of the pixels L L parallel data writing address while the M × N pixels within a predetermined range to store L storage means image data by the M × N pixel information thereof; selecting means for selecting the K image data from the L image data; from the storage means the selected plotting data of K are divided into N times each read out pixel information of M second data bus means, the plotting data of K as read out within a predetermined range of the M × N pixel driving device K times in the time period. 在这种情况下,选择装置可以决定根据从上述图像信息所获得的灰度信息来选择成像数据的次数。 In this case, the selection means may select the number of times determined in accordance with gradation information of imaging data obtained from the image information.

根据本发明又一个观点,上述显示装置包括:把彩色图像信息变换成以预定时间周期依次切换R、G、B各色图像信息的串行数据的装置;把各时间周期内的R、G、B各色的串行数据并行展开为所要求的全灰度数(L)的第一数据总线装置;通过对预定范围内的M×N个像素依次地把对应于各像素的L个并行数据同时写入L个地址,来存储由M×N个像素信息组成的L个成像数据的存储装置;从存储装置把读出成像数据中所要求的灰度数(K)的成像数据分别分成N次每次读出M个像素信息的第二数据总线装置;由所读出的K个成像数据把预定范围内的M×N个像素在时间周期内进行K次驱动的驱动装置。 According to yet another viewpoint of the present invention, the display device comprising: the color image information into a predetermined period of time to R, G, B color image information apparatus of the serial data are sequentially switched; the period of time in each R, G, B color serial data in parallel to expand the number of all the gradations as requested (L) of the first data bus means; by the M × N pixels within a predetermined range sequentially corresponding to each pixel simultaneous write parallel data L the addresses L, L storage means for storing image data by the M × N pixels of information; read out from the storage means the number of gradations required imaging data (K) of the imaging data are divided into N times per second data bus means M times the readout pixel information; within a predetermined range of the M × N pixel drive means for driving K times in the time period from the plotting data of K as read out.

根据本发明的又一个观点,提供一种图像信息处理方法,其特征是,通过具有区域不同的至少三个地址的存储器来处理图像信息时,仅仅使并行展开的数据区的地址为全部地址有效,由剩余的地址并行处理所指定的数据。 According to still another aspect of the present invention, there is provided an image information processing method, wherein, when processing the image information through a memory having at least three different regions of the address, so that only the address of the data area to expand parallel to all address valid , parallel processing by the remaining address data specified. 在这种情况下,可以构成为在写入操作时和读出操作时全部地址有效的数据区不相同。 In this case, all addresses may constitute valid data area is not the same operation as in the write operation and read.

根据本发明,例如NTSC制的通常的合成信号被分离成为R、G、B各色的色数据,这些色数据被变换为以预定周期切换的串行数据。 According to the present invention, for example, generally made of composite NTSC signal is separated into R, G, B color data of each color, the color data is converted into serial data in a predetermined period of handover. 在此,以R信号为代表来说明本发明的动作。 Here, the R signal is representative of the operation of the present invention will be described. 首先,在从包含在串行数据各周期中的R信号分上下两部分来驱动预定范围如640×480点的图像的情况下,形成640×240点的R色成像数据。 First, in the case where a predetermined drive range of the image such as 640 × 480 dots from the R signal is included in each cycle of the serial data is divided into two portions, forming the color image data R 640 × 240 dots. 根据该成像数据,通过在各周期内多次重复驱动上述范围内的像素,就能大大地转动液晶,可以得到高亮度。 According to the imaging data, by repeatedly driving the pixels within the above range in each cycle, the liquid crystal can be greatly rotated, a high brightness can be obtained. 通过根据灰度信息来调整驱动像素的次数,就能在需要高亮度的情况下增加驱动次数,而在低亮度下已足够的情况下通过减小驱动次数,就能在像素上产生灰度差,而得到高对比度的图像。 By adjusting the frequency for driving the pixel based on the gradation information, the drive frequency can be increased in a case where high brightness is required, but has been reduced by the driving frequency can be generated in the case where the pixel at a sufficient difference in gradation at the low luminance , to obtain a high-contrast images.

下面更具体地说明本发明的动作。 The following more specifically the operation of the present invention is described. 被变换为上述这种串行数据的R信号,通过第一数据总线装置根据所要求的全灰度数(例如L=256)并行展开。 This is converted to the serial data signal R, the number of all the gradations according to expand in parallel (e.g. L = 256) as required by the first data bus means. 通过把256的数据分别存储到具有另一个灰度地址的存储器中,而形成256个640×240点的R色成像数据。 By the data are stored in the memory 256 with the address of another gray, the color image data formed by R 256 640 × 240 dots. 然后,当在存储器内形成R色成像数据之后,根据各线地址同时每次读640点读出240次数据,远远高于同时每次读一点读出640×240次数据所需要的某种现有依次读出动作的速度读出一次R色成像数据。 Then, after forming the color imaging data R in the memory, in accordance with various line address 640 while each read dot data is read out 240 times, it is much higher than a certain point while each read 640 × 240 readout times required data sequentially reading operation speed of the conventional read a R color image data. 根据本发明,由于这种高速读出的各R色成像数据,在各色帧中,在T/256时间内被多次(最高256次)读出,来驱动像素,因而在总驱动时间(T)相等的情况下,与在T时间内仅驱动一次像素的现有方式相比,可以得到极宽的动态范围的液晶动作量。 According to the present invention, since the color imaging data R read out of this high-speed, in the color frame is a plurality of times (up to 256) reads out the T / 256 time to drive the pixels, thus the total drive time (T ) for equal, compared to the conventional manner within time T is driven only one pixel, the amount of operation of the liquid crystal can be obtained an extremely wide dynamic range. 这样,与现有方式相比,可以得到高对比度的图像。 Thus, compared with the conventional manner, high-contrast images can be obtained. 而且,通过根据灰度数来选择驱动像素的次数(例如在全灰度时,进行256次驱动;在1/2灰度时,进行128次驱动),就能表现出灰度差。 Further, by selecting the number of pixels driven in accordance with the number of gradations (for example, when all the gradations, 256 views drive; at 1/2 gradation driving for 128), can exhibit a gradation difference.

根据按本发明所构成的图像信息的处理方法,准备可根据灰度地址进行灰度化能存储与例如由行地址和数据选择器地址所管理的各像素相关的显示信息,作为灰度等级的显示数据的存储器组。 The image information processing method according to the present invention is composed, may be prepared grayscale of each pixel can store and display information related to, for example, selected by a row address and a data address managed by the address according to the gradation, the gradation levels display memory group data. 由此,如图10模式地表示,在写入操作时,使灰度地址为全地址有效,对8比特数据进行译码,在展开为例如256个数据总线之后,通过指定行地址(0~239)和数据选择器地址(0~639),对应各灰度地址来并行写入256比特。 Accordingly, FIG. 10 showing a mode, in a write operation, the address gradation full address is valid, 8 bits of data is decoded, after the deployment of a data bus 256, for example, by specifying the row address (0 ~ 239) and the data selector addresses (0 to 639), corresponding to the respective gradation addresses of 256 bits is written in parallel. 对此,在读出操作时,使数据选择器地址为全地址有效,通过指定灰度地址(0~255)和行地址(0~239),就能并行读出各线的显示数据。 In this regard, at the time of reading operation, so that the data selector valid address for the entire address, by designating the gradation addresses (0 to 255) and the row address (0 to 239), the display data can be read out in parallel for each line.

如上所述那样,根据该方法,把区域不同的三种地址同不同动作相组合,通过使并行展开的数据区的地址为全地址有效,就能在一次时标同步中同时处理大量的数据,而能使向LCD的信息传输速度高速化,提高LCD驱动的灵敏度。 As described above, according to this method, three different addresses to different areas of the same combined operation, the effective address is the address that the full deployment of the parallel data area, a large amount of data can be processed simultaneously at a synchronization mark, and to make the speed of information transmission speed of the LCD, the LCD driver to improve sensitivity.

图1是说明用于本发明一个实施例的图像帧、彩色帧、显示帧的概念的说明图;图2是说明与采用本发明的重复显示方式的显示装置的一个实施例有关的液晶的动作的说明图。 FIG 1 is a illustrates an embodiment of an image frame, a color frame embodiment of the present invention, the display illustrates the concept of a frame; FIG. 2 illustrates the operation of the liquid crystal display device according to an embodiment using repeated display of the present invention relating to the FIG.

图3是说明与采用依本发明的重复显示方式的显示装置的一个实施例有关的显示灰度表现的说明图。 FIG 3 is an explanatory view illustrating an embodiment of the display gradation of the display device using repeated display under this invention is related to performance.

图4是表示采用依本发明的重复显示方式的显示装置的驱动电路之一实施例的系统结构图;图5是表示可适用于图4所示系统的1个像素的存储器结构的构成图;图6是表示在可适用于图4所示系统的存储器组上展开的数据序列和数据内容的说明图; FIG 4 is a system configuration diagram showing one example of a display device employing a display repeated under this embodiment of the invention, the driving circuit embodiment; FIG. 5 is a block diagram showing a configuration of a memory system shown in FIG 4 may be applied to the one pixel; FIG 6 is a diagram illustrating the data content of the data sequence and expanded on the memory group may be applied to the system shown in Figure 4;

图7是表示适用于图4所示系统的存储器写入动作的定时的脉冲波形图;图8是表示适用于图4所示系统的存储器的读出动作的定时的脉冲波形图;图9是表示采用依本发明的重复显示方式的显示装置的另一个实施例的显示动作的脉冲波形图;图10是表示依本发明的图像信息的处理方法的梗概的说明图;以及图11是表示以往的3色背光方式的彩色开关动作定时的脉冲波形图。 FIG 7 is a waveform diagram showing a timing pulse applied to a memory system shown in FIG. 4 of the write operation; FIG. 8 is a diagram showing a pulse waveform applied to the timing of the read operation of FIG memory system shown in FIG. 4; FIG. 9 is FIG pulse waveform display operation according to another embodiment of the apparatus denotes a display using repeated display under this invention; Figure 10 is an explanatory view of the outline of the image information processing method under this invention; and FIG. 11 is a diagram showing a conventional 3, the color switching timing of the pulse waveform diagram of a color backlight system.

以下参照附图,对本发明的优选实施例加以说明。 Referring to the drawings, embodiments will be described preferred embodiments of the present invention.

1.帧的定义首先,参照图1,说明依本发明所构成的彩色显示装置的动作(以下称为重复显示方式)的基本概念。 1. Definition of Frame First, referring to FIG. 1, a color under this invention is composed of an operation display device (hereinafter, referred to as repetitive display system) of the basic concept. 在重复显示方式中,要注意(1)图像帧、(2)彩色帧、(3)显示帧这三种性质不同的帧频,因而从这些帧的概念说起。 Repetitive display mode, to be noted that (1) the image frame, (2) color frame, (3) show three different frame nature frame rate, and thus the concept of the frames from the start.

(1)图像帧此图像帧是最大的帧单位,例如是40~50Hz(20~20mS)左右的频率(时间周期)。 (1) image frames of the image frame is the largest frame unit, for example, about 40 ~ 50Hz (20 ~ 20mS) Frequency (time period). NTSC制式的合成信号被分离成R、G、B各色的色数据后,在后述的彩色帧周期内把R、G、B各色图像信息变换成依次切换的串行数据。 After the NTSC composite signal is separated into R, G, B color data of each color in the color frame period later the R, G, B color image information is converted into serial data sequentially switched. 把图像帧定义为此串行数据中的R、G、B各色的一次的彩色帧时间周期的合计时间。 The image frame is defined for this serial data R, G, B primary colors of the total time period of the color frame. 在此图像帧内,为把R图像、G图像、B图像在视觉上合成而看做彩色图像,通过在可得到完美品质的程度内设定此图像帧为彩色图像,可以决定下述的彩色帧、显示帧的时间周期。 In this image frame, as the R image, G image, B image synthesizing visually seen as a color image, by setting the degree of image frames available in perfect quality of color images, color can be determined by the following frame, the frame display time period.

(2)彩色帧彩色帧是在按上述构成的串行数据内,切换与各色有关的信息的时间周期。 (2) color frame of a color frame is constituted by the above-described serial data, the switching time period associated with the color information. 另外,就与图像帧的关系而言,彩色帧是把图像帧分派成用于显示R、G、B各色图像信息的3段时间周期,例如图像帧设定为40~50Ha(20~25mS)范围时,彩色帧的频率在120~150Hz(6.6~8.3mS)的范围。 Further, with regard to the relationship of the image frame, the color frame is assigned to an image frame for display R, G, B 3 period the time period of each color image information such as an image frame is set to 40 ~ 50Ha (20 ~ 25mS) when the range, the frequency range in the color frame 120 ~ 150Hz (6.6 ~ 8.3mS) a. 从而,此彩色帧若长,为增加由下述显示帧的重复显示次数,可增大液晶变化量的动态范围而得到高对比度的图像。 Accordingly, if this color frame length, by the following display frame to increase the number of times repeatedly displayed, the liquid crystal can increase the amount of change in the dynamic range and high-contrast image. 但是彩色帧过长,在视觉上感到闪烁而不好。 But the color frame is too long, flashing and feel good visually. 从而,实际上,需要设定彩色帧作为闪烁和对比度等各种参数的调整值。 Thus, in fact, it needs to set the color frame as the adjustment values ​​of various parameters like flickers and contrast. 另外,在以往的3色背光方式中,为了通过此彩色帧的调整提高画面质量,对所得的对比度自然存在限制,特别是在适用于STN方式的情况下,不能得到几个满意的彩色图像。 Further, in the conventional 3 color backlight system, to improve the picture quality by adjusting color frame of this, there is a limit on the resultant natural contrast, in the case of particularly suitable for STN mode, you can not be satisfied with few color images. 这一点,在本发明的重复显示方式中,由于引起下述的显示帧概念,可得到更高对比度的图像。 This is, in the repetitive display system of the present invention, since the frame of the concept arises a display, an image with higher contrast can be obtained.

(3)显示帧那么,根据本发明,从R、G、B各色串行数据所得到的各色图像信息,在把预定范围(以下称为成像范围)例如640×480比特的图像分割为上下两次驱动的场合下,变成驱动640×240比特的像素的成像数据。 (3) display frame, then, according to the present invention, the image information of each color R, G, B color obtained from the serial data, the predetermined range in the image (hereinafter, referred to as an imaging range), for example, 640 × 480 bits is divided into two upper and lower the case of driving times, driving into the imaging data 640 × 240 pixel bits. 而且把此显示帧定义为在上述彩色帧内用此成像数据一次驱动上述成像范围的像素的时间。 Also on this frame is defined as the use of this imaging data in a frame of the color pixel in the driving time of the imaging range. 因而,此显示帧的周期越长,成像范围越可能扩大。 Thus, the longer the period of this display frame, the imaging range may be expanded. 但是,如后所述,在本发明的重复显示方式中,在各色的彩色范围内,由在此显示帧单位内进行多次成像而扩大了累积的液晶变化量,因想要得到高对比度的图像,如果显示帧的周期短,成像次数也相应增加,就可得到更高的对比度。 However, as described later, the repetitive display system according to the present invention, in the color range of each color, shown here by a plurality of times in units of frames within the enlarged image of the liquid crystal changes the accumulation, of the desire to obtain a high contrast image, if the short period of a frame, a corresponding increase in the number of image display higher contrast can be obtained. 另外,如后所述,按此重复显示方式,由于成像次数被显示帧调节,为附加灰度差,通过缩短显示帧的周期来增加成像次数就可以增加灰度数。 Further, as described later, Click repetitive display, since the image display frame frequency is adjusted, the difference of gradation is added to increase the number of imaging by reducing the display frame period can increase the number of gray scales. 从而,当决定显示帧的周期之时,需要考虑成像范围、对比度、灰度数等各种参数。 Thus, when the determined display frame period, it is necessary to consider various parameters of the imaging range, contrast, number of gradation and so on. 例如,在以全256灰度表现的情况下,需要在一次彩色帧中插入256次显示帧,比如,当设定彩色帧为120Hz~150Hz(6.6mS~8.3mS)时,显示帧频率(周期)大约是30KHz~38KHz(26μS~33μS)。 For example, in the case of 256 gradations full performance, need to be inserted in one color frame 256 times a display frame, for example, when a color frame is set to 120Hz ~ 150Hz (6.6mS ~ 8.3mS), the display frame frequency (time period ) of about 30KHz ~ 38KHz (26μS ~ 33μS).

2.重复显示方式的基本动作。 2. The basic operation of the display mode is repeated.

然后参照图2说明基于本发明所构成的重复显示方式的显示装置的动作。 Referring then to FIG. 2 illustrates the operation of the display device based on the repeated display of the present invention is constituted. 本发明的宗旨在于,对驱动信号的液晶的动作性能,着眼于表示上升时的积分特性及表示下降时的微分特性,如果总的驱动时间相同,根据经过总驱时间连续驱动液晶所产生的液晶动作量,由经过多次重复驱动液晶,提高在各驱动时间所进行的液晶动作量的积分值。 The purpose of the present invention, the liquid crystal operation performance of the driving signals, focusing integral characteristics when representing the rise and represents a differential characteristic decreases, if the total driving time of the same, the liquid crystal based on the elapsed total drive time of continuously driving the liquid crystal generated the amount of operation by driving the liquid crystal after repeated increase the amount of operation of an integrated value of the liquid crystal in each driving time performed.

照以往的3色背光方式,让动作信号只在Tx时导通,在此期间(t0~t2)驱动液晶后,使动作信号截止,靠液晶的自然衰减,而得到t0~t3的显示期间。 According to the conventional 3 color backlight system, so that an operation signal is only turned on at the Tx time, during this period (t0 ~ t2) after the liquid crystal is driven so that the operation signal is turned off, against liquid natural attenuation, obtained during the display period t0 ~ t3 of. 从而,将以往的动作信号的液晶动作量Y1用下面的式(1)表示。 Thus, the amount of operation of the conventional liquid crystal operation signal Y1 represented by the following formula (1). 与此相反,在重复显示方式中,各驱动时间短了,因重复利用液晶上升时的动作响应的良好部分(Y2),即使总时间与以往方式相同(Tx=Ta+Tb+…+Tn),可以得到比以往的液晶动作量Y1还大的累积的液晶动作量Y4。 In contrast to this, in the repetitive display system, each of the driving time is short, because recycling operation when the liquid crystal rises in response to the good part (Y2), even if the total time of the conventional same way (Tx = Ta + Tb + ... + Tn), can be obtained than Y1 conventional liquid crystal operation amount larger accumulated operation amount of the liquid crystal Y4. 即,在重复显示方式中的各驱动时间内的液晶上升量Y2由下面的式(2)表达。 That is, the amount of the rise time of the liquid crystal in each driving mode is repeatedly displayed Y2 expressed by the following formula (2). 另外,在重复显示方式中的各驱动时间内的液晶下降量Y3,由下面的式(3)表达。 Further, the drop amount of the liquid crystal in each driving time of mode Y3, (3) expressed by the following formula is repeatedly displayed. Y3=Σt1t0---(3)]]>从而,在总时间(Tx=Ta+Tb+…+Tn)内所得到的液晶动作的累积量Y4,用下面的式(4)表达。 Y3 = & Sigma; t1t0 --- (3)]]> so, the cumulative amount of operation of the liquid crystal in the (Tx = Ta + Tb + ... + Tn) Total time obtained Y4, (4) expressed by the following formula. 由于以上的结果,因Y4>Y1,若用本发明的重复显示方式,在相同的时间,可得到远大于以往方式的液晶动作量。 Due to the above results, due to Y4> Y1, when a repetitive display system of the present invention, at the same time, the amount of operation of the liquid crystal is much greater than can be obtained in a conventional manner. 即,若就图1来说明,将显示帧的时间周期设定为各驱动时间(Ta、Tb…Tn)的总合Tx,由于在各彩色帧的时间周期内经多次重复显示,在各彩色帧内可以得到远远高于以往方式的液晶动作量。 That is, if it is described in FIG. 1, the display time period of a frame is set to the respective driving time (Ta, Tb ... Tn) the sum Tx, since by the time period of each display color frames repeated in each color intra operation of the liquid crystal can be much higher than the conventional system. 3.由重复显示方式所产生的层次表现根据本发明,通过调节由各彩色帧内的显示帧所产生的成像次数,可以表现显示灰度。 3. The expression level produced by the repetitive display system according to the present invention, by adjusting the number of image display frames by the color of the generated frame, display gradation can be expressed.

即,根据本发明的重复显示方式,如图3所示,通过对液晶驱动信号的导通截止时间的调节,则可调整液晶的累积动作量。 That is, according to the repetitive display system according to the present invention, shown in Figure 3, by adjusting the on-off time of the liquid crystal driving signal, the operation may be adjusted cumulative amount of the liquid crystal. 例如,通过在全部的显示帧中都进行成像,使液晶的动作达到了饱和点,则可以进行全灰度的显示。 For example, by imaging both in all display frame, so that the operation of the liquid crystal reaches a saturation point, it can be displayed full-gradation. 另外,通过在其二分之一次数的显示帧中,进行成像,使液晶的动作达到动作效率1,可进行1/2灰度成像。 Further, by displaying the number of frames in the other one-half, it is imaged, so that the operation efficiency of the operation of the liquid crystal reaches 1, 1/2 gradation can be imaged. 再有,由于在其二分之一次数的显示帧中进行成像,使液晶动作达到动作效率2,可进行1/4灰度成像。 Further, since the image display frame of one-half the number of Second, the operation efficiency of the liquid crystal operation reaches 2, 1/4 gradation can be imaged. 如上所述,根据本发明,通过调节由各彩色帧内的显示帧所产生的成像次数,可以表现显示灰度。 As described above, according to the present invention, by adjusting the number of image display frames by the color of the generated frame, display gradation can be expressed.

另外,在控制显示灰度时,根据灰度数据多次读出同一成像信息,可以进行显示。 Further, when controlling the display gradation based on the gradation data read many times the same imaging information, it may be displayed. 但是,对后述的由灰度地址所管理的成像信息只预先准备全灰度数,通过,根据灰度信息依次读出成像信息而进行显示,则可得到更高速的帧响应。 However, imaging information by the gradation address management of later prepared in advance only the number of all the gradations, by, according to the gradation information are sequentially read out to display the imaging information can be obtained faster response frame. 另外,如后所述,把预定的次数显示帧作为一组,也可用此组的组合来显示灰度。 Further, as described later, the predetermined number of display frames as a group, this group can also be used in combination to display gradation. 当通过有例如256个灰度地址的存储器来管理成像信息时,设定256级的灰度数据,可从中读出任意次数成像信息,但以32次的显示帧为1组,而构成8级灰度,就可以进行8灰度的彩色显示。 For example, when the memory by 256 gradations imaging information to manage addresses, setting the gradation data 256, any number may be read from the imaging information, the display frame 32 is a group constituted 8 gradation, the gradation can be performed 8 color display.

4.系统结构在图4~图8中表示基于本发明的重复显示方式的彩色显示装置的系统结构。 4. The system configuration of a system configuration showing the color display device of the present invention is repeatedly display mode based on in FIG. 4 to FIG. 但是,对于本领域的技术人员,可以在权利要求书中所记载的技术思想范围内设计出各种系统结构,不言而喻对于这些系统的结构当然属于本发明的技术范围。 However, those skilled in the art, various system configurations may be devised within the claims described technical idea, of course, understood that the technical scope of the present invention to the structure of these systems.

本实施例的构成如下,对每16.6mS输入的NTSC制式的通常的混合信号,通过RGB选择器10进行彩色分割,再把每彩色帧R、G、B各色变换成在周期上切换的RGB串行数据后,由A/D变换器12变换成8位的2进制数据。 Configuration of the present embodiment is as follows, the mixed signal of normal NTSC system 16.6mS each input RGB color selector is divided by 10, then the color of each frame of R, G, B converted into RGB color string is switched in the cycle after the line data, converted by the a / D converter 12 into 8-bit binary data. 然后,使各彩色帧内所含的各色的1个画面的显示数据,通过L/U选择器14分别把上下画面分割成表示上部画面的显示数据和下部画面的显示数据,再分别送至数据选择器16U及数据选择器16D。 Then, display data for one screen of each color of each color contained in the frame, respectively, the screen is divided into upper and lower display data representing the display data of an upper screen and a lower screen by L / U selector 14, respectively, to the data and then and data selectors 16U selector 16D. 例如,当进行640×480点显示时,作为上下各成像区域各自把640×240比特的画面显示数据送至数据选择器16U、16D。 For example, when 640 × 480 dot display, as respective upper and lower image forming regions 640 × 240 bits in the screen display data to the data selectors 16U, 16D. 再有,STNC信号的垂直同步及水平同步,由定时译码器18进行计数,用以进行各种信号的同步。 Further, the vertical and horizontal synchronizing signals STNC synchronized by the timing decoder 18 counts, for synchronizing various signals.

那么,送至数据选择器16U、16D的图像数据,通过数据器16U、16D根据画面上的位置,经第1数据20U、20D并行地展开为所需的灰度数,比如256,再根据送至地址计数器22U、22D的线地址信号及灰度地址信号,展开成数据结构RAM群24U、24D。 Then, the image data supplied to the data selectors 16U, 16D, and the data unit, 16D according to the position on the screen, the first data 20U, 20D in parallel to expand the number of required gray 16U, such as 256, and then sent in accordance with 22U to the address counter, the address signal lines 22D and the gradation address signals, and expanded into data constituting RAM groups 24U, 24D. 其结果,与一个图像帧的图像信息有关,关于R、G、B各色的彩色帧,存储在256灰度地址中所管理的640×240比特图像数据。 As a result, the image information relating to one image frame, with respect to R, G, B colors of the color frame 256 is stored in the address managed in gray 640 × 240 bit image data. 另外,对向数据结构RAM群24U、24D的写入定时,可以如图7所示的动作定时进行实施。 In addition, the 24U, write timing of the data constituting RAM groups 24D, the operation shown in FIG. 7 may be implemented timing.

参照图5及图6详述这一点。 Referring to FIG. 5 and FIG. 6 described in detail on this point. 另外,图5表示1个像素的存储器结构,图6表示分别在数据结构RAM群24U、24D展开的数据排列及数据内容。 Further, FIG. 5 shows a memory structure of one pixel, respectively, in FIG. 6 shows the data constituting RAM groups 24U, 24D expanded data arrangement and data content. 如图5所示,1个像素的图像数据对于R、G、B各色,从数据选择器24,由第1数据总线20,根据灰度数,并行地展开为256,分别存入在灰度地址计数器22a中所管理的256个存储位置。 5, the image data of one pixel for R, G, B colors, 24, by the first data bus 20, according to the number of gradations, deployed in parallel from the data selector 256, are stored in the gradation address counter 22a managed in 256 storage locations. 再有,在这些像素数据一画面上的位置信息由线地址计数器22b来管理。 Further, the position information on the screen of the pixel data by a line address counter 22b is managed. 因此,在数据结构RAM群24U、24D中,如图6所示,关于由640的数据选择器区域240的线地址所规定的各像素区域,决定分别在256灰度地址中展开图像信息并进行存储。 Thus, in the data constituting RAM groups 24U, 24D, as shown in FIG. 6, on each pixel region 240 defined by the line address selector 640 of the data area, respectively, decided to expand the gradation image information 256 and address storage. 而模拟表示这种状态的是图1,关于各图像数据的各彩色帧,仅就一组灰度的显示帧表示重叠存储的状态。 The analog representation of the state is 1, on the respective color image data of each frame, set only for a gradation display frame shows a state overlapping storage.

按上述,存储于数据结构RAM群24U、24D的图像数据通过第2数据总线装置26U、26D,由线计数器28U、28D计数的每次1线地读出一组240线,可以驱动有640×480比特的显示区域的上下液晶显示部30U、30D的各像素。 As described above, stored in the data constituting RAM groups 24U, 24D of the image data by the second data bus means 26U, 26D, a line counter 28U, 28D counts each read line of one set of lines 240, the drive may have a 640 × upper and lower bits of the liquid crystal display area 480 display unit 30U, 30D of the respective pixels. 然后,此时,按本发明的重复显示方式,根据各画面的灰度信息,如图3所示,根据指定存储着读出的图像数据的灰度地址,依次读出所需数目的图像信息。 Then, this time, by repeating the display of the present invention, in accordance with gradation information of each picture, as shown, the image stored according to the specified data read address of the gradation, a required number of sequentially read out image information 3 . 由于系统是这样构成的,与以往方式比较,扩大了液晶的动作量,同时谋求液晶动作的灰度化,还可实现向显示部传输高速信息。 Because the system is configured such that, compared with the conventional way, the expanding operation of the liquid crystal, the liquid crystal gradation while seeking operation, can achieve high-speed transmission of information to the display unit. 另外,就从数据结构RAM群24U、24D来的读出定时而言,可按图8所示的动作定时实施。 Moreover, in terms of the timing data read from constituting RAM groups 24U, 24D to the operation timing shown in FIG. 8 may be implemented. 另外,关于更具体地显示动作的定时,参照图9后述。 Further, more specifically, on the display operation timing described later with reference to FIG 9 later.

5.重复显示方式的显示动作定时然后,对可实施以上结构的本发明的重复显示方式系统的显示动作,参照图9所示的脉冲波形图来进行说明。 5. Repeat display operation timing and then displayed on the display operation of the repetitive display system of the present invention may be implemented in the above structure, will be described with reference to a timing chart shown in Fig. 另外,在图9所示的实施例中,为了简化说明,假定在32点(4比特×8块)×32点的成像区域进行彩色显示。 Further, in the embodiment shown in FIG. 9, to simplify the description, it is assumed that 32 points (4 bits × 8 blocks) × 32 dots imaging area color display.

例如,把100nS的脉冲信号作为点块信号进行控制时,因为可在1脉冲(100nS)进行1点的4比特的数据显示,为了显示32点的1线的数据则需要800nS。 For example, when the pulse signal is controlled as a point 100nS block signal, since 4-bit data can be a point in a pulse (100nS) display, the display data for one line needs 32 dots is 800nS. 这样,通过逐线地显示32线,可显示一组画面的图像信息,已经说明此动作所需时间周期依本发明设定为显示帧。 Thus, the display 32 lines, the displayed image information of a group of pictures, the time required for this operation has been described under this invention is set as the display period by the frame line by line. 而且,对本实施例,显示帧需要25.6μS。 Further, the present embodiment, the display frame requires 25.6μS. 而根据本发明,此显示帧被重复256次,构成6.55mS的彩色帧,通过重复显示成像,可得到高的对比度。 According to the present invention, the display frame is repeated 256 times to form a color frame 6.55mS by repeating the imaging display, high contrast can be obtained. 另外为了表现来度,本发明中,把256次显示帧,设定8级的灰度数据,每灰度819.2μS、32个显示帧,采用由灰度地址管理成像次数的结构。 Furthermore, in order to performance of the present invention, the display frame 256, the setting gradation data of 8 stages, each gradation 819.2μS, 32 one display frame using the address management structures by the grayscale imaging times. 再有,本发明中,虽然以32次连续的显示帧为一组构成灰度数据,勿庸置言,以1+8n、2+8n、…8+8n(n=0、1、2…31)显示帧为一组也能构成灰度数据。 Further, the present invention, although the 32 consecutive display frames as a group consisting of gradation data, needless to say, to 1 + 8n, 2 + 8n, ... 8 + 8n (n = 0,1,2 ... 31) a display frame as a gradation data set can be constructed. 这样一来,由256次的显示帧构成R、G、B各色的彩色帧,使R、G、B各色的彩色帧各显示一次,构成19.66mS的图像帧,结果,以高响应地显示出高对比度的有预期灰度的彩色图像。 Thus, the display frame 256 constituting the R, G, B colors of the color frame, so that R, G, B colors in each color frame display time, image frames constituting 19.66mS, the results show a high responsively color image with high contrast gradation expected.

再有,在以上的实施例中,虽然以液晶显示装置(LCD)为例,对本发明做了说明,但本发明不限于所举出的实施例。 Further, in the above embodiment, although a liquid crystal display device (LCD) as an example, the present invention has been described, but the present invention is not limited to the exemplified embodiments. 本发明可应用于3色背光式的所有平板显示,例如可优选适用于与本申请人相关的磁性流体显示器(特愿平5-191787号、特愿平5-270063号、特愿平6-156816号)等采用平板显示进行彩色显示的场合。 The present invention is applicable to all three-color backlight type display plate, can be preferably applied to, for example, related to the present Applicant a magnetic fluid displays (No.HEI 5-191787, No.HEI 5-270063, No. flat 6- No. 156 816) and other flat panel display applications using color display. 另外,本发明特别适合用于STN方式的LCD,但本发明不限于此,也可适用于TFT方式、ECB方式、强电感性方式、场串行方式等各种方式的LCD。 Further, the present invention is particularly suitable for STN mode LCD, the present invention is not limited thereto but is also applicable to a TFT mode, ECB mode LCD various ways, the strong inductive mode, a serial mode field and the like.

本发明因按以上方式构成,所以可得到以下说明的优异的效果。 The present invention is constituted by the above manner, it is obtained an excellent effect described below.

(1)借助重复显示方式的液晶动作速度的高速化根据本发明,在各彩色帧内多次重复写入1个画面的图像数据,使液晶间歇地分多次驱动,因而与连续驱动液晶的场合相比,可使液晶的动作速度高速化,确保大的动作量,其结果可以在短的各彩色帧内获得高对比度的图像。 (1) by means of repeated high-speed display in accordance with the present invention, repeatedly write the image data for one screen in each frame of the liquid crystal color speed operation mode, the liquid crystal is intermittently driven a plurality of times, thereby driving the liquid crystal continuous as compared to the case, it can speed up the operation speed of liquid crystal, to ensure a large amount of the operation, a result can be obtained in a short high-contrast images each color frame.

(2)借助对重复显示方式的显示次数控制的液晶动作的灰度化根据本发明,由于调节了在各彩色帧内重复写入1个画面的图像数据的次数,可以在短的各彩色帧内表现灰度差。 (2) by means of the operation of the gradation liquid crystal display repeats the number of times of display control according to the present invention, since the number of repetitions adjusted image data for one screen is written in each of the color frame, the frame may be shorter in each color performance of the gray-scale difference. 即,在想得到高亮度的情况下,增加重复显示次数,在较低亮度已足够的情况下,减少重复显示次数,由此可表现出灰度差。 That is, in the case of high luminance want to increase the number of times repeatedly displayed, at lower brightness is enough, reduce the number of repeatedly displayed, whereby gradation can exhibit a difference.

(3)对LCD的信息传输的高速化根据本发明的系统结构的一实施例,为由线地址和数据选择器地址管理的与各像素有关信息准备了可以作为显示不同灰度的数据,由灰度地址灰度化并存储的存储器群。 (3) information on the transmission speed of an LCD according to an embodiment of the system configuration of the present invention, by the line address and the data selector address management information relating to each pixel can be prepared as display different gradation data, the and gradation of the gradation address stored in the memory group. 从而,如图10的模式所示,在写入动作时,为使灰度地址全地址有效,将8比特数据译码,例如在256根数据总线上展开后,根据线地址(0~239)及数据选择器地址(0~639)的指示,对应于各灰度地址,并行写入256比特。 After thus, the pattern shown in FIG. 10, when the write operation, the address for the gradation full address is valid, the coded data of 8 bits, for example, spread over a data bus 256, according to the address line (0 to 239) and the data selector addresses (0 to 639) an indication corresponding to the respective gradation addresses of 256 bits is written in parallel. 相反,在读出动作时,为数据选择器地址余地址有效,根据灰度地址(0~255)和线地址(0~239)的指示,并行读出各线的显示数据。 Conversely, in the read operation, the data selector addresses than address is valid, in accordance with the address indicating the gradation (0 to 255) and the line addresses (0 to 239), and reads out the display data of each parallel line.

如上所述,在本发明中,把区域不同的3种地址按不同的动作来组合,由于使并行展开的数据区域的地址全地址有效,则可以1次时钟定时同时处理大量的数据,使向LCD传送信息的速度高速化,提高了LCD驱动的灵敏度。 As described above, in the present invention, the three kinds of different areas in different actions to address combination, since the address of the data area to expand so that the parallel full address is valid, secondary clock timing can be simultaneously processed a large amount of data, so that the LCD speed of information transmission speed, increase the sensitivity of the LCD driver.

Claims (10)

1.一种彩色平板显示装置,该装置包括:由根据图像信息而驱动来变化透光率的多个像素所构成的显示部和可以根据该图像信息分别独立地进行通断控制的R、G、B各色背光光源,其特征在于,包括:把彩色图像信息变换成以预定时间周期依次切换R、G、B各色图像信息的串行数据的装置;把上述各时间周期内的R、G、B各色的串行数据变换成分别驱动预定范围内的多个像素的R、G、B各色成像数据的装置;以及根据上述R、G、B各色成像数据在上述各时间周期内多次重复驱动在上述预定范围内的多个像素的装置。 A color panel display device, the apparatus comprising: a drive to change the display section according to image information by a plurality of pixels composed of light transmittance according to the image information and can independently perform on-off control R, G, , and B colors of the backlight light source, characterized by comprising: the color image information into a predetermined period of time to R, G, and B colors of the serial data in the image information are sequentially switched; R in each of the time periods, G, and B components of the serial data into a plurality of pixels within a predetermined range of R, G, B color image forming apparatus are driven data; and repeated driving in each time period based on the R, G, B color image data It means a plurality of pixels within the predetermined range.
2.根据权利要求1所述的彩色平板显示装置,其特征是,进一步设置根据从上述图像信息所获得的灰度信息控制在上述各时间周期内驱动在上述预定范围内的多个像素的次数的装置。 A color flat panel display device of claim 1, characterized in that the number of the plurality of pixels in accordance with gradation information obtained from the image information in each of the control time period within the predetermined drive range is further provided s installation.
3.根据权利要求1所述的彩色平板显示装置,其特征是,上述显示装置是STN方式的液晶显示装置。 3. the color flat display device according to claim 1, wherein said display means is a liquid crystal display device of STN mode.
4.一种彩色平板显示装置,该装置包括:由根据图像信息而驱动来变化透光率的多个像素所构成的显示部和可以根据该图像信息分别独立地进行通断控制的R、G、 B各色背光光源,其特征在于,包括:把彩色图像信息变换成以预定时间周期依次切换R、G、B各色图像信息的串行数据的装置;把上述各时间周期内的R、G、B各色串行数据并行展开成L个的第一数据总线装置;通过对预定范围内的M×N个像素分别依次地把对应于各像素的L个并行数据同时写入L个地址,来存储由M×N个像素信息所组成的L个成像数据的存储装置;从上述L个成像数据中选择K个成像数据的选择装置;从上述存储装置把所选择的K个成像数据分别每次读M个像素信息,分N次读出的第二数据总线装置;由所读出的K个成像数据把预定范围内的M×N个像素在上述时间周期内进行K次驱动的驱动装置 4. A color panel display device, the apparatus comprising: a drive to change the display section according to image information by a plurality of pixels composed of light transmittance according to the image information and can independently perform on-off control R, G, , and B colors of the backlight light source, characterized by comprising: the color image information into a predetermined period of time to R, G, and B colors of the serial data in the image information are sequentially switched; R in each of the time periods, G, B color serial data expanded into L parallel to the first data bus means; were sequentially corresponding to each pixel data writing L L parallel by simultaneously addresses of M × N pixels within a predetermined range, to store L storage device consists of M × N pixel information composed of imaging data; selecting means for selecting the plotting data of K from said plotting data of L; and from said storage means to the selected plotting data of K, respectively, each read M pixel information, sub-second data bus means for reading out N times; to the M × N pixels is within a predetermined range K times within said time period of driving the plotting data of K as read out drive means
5.根据权利要求4所述的彩色平板显示装置,其特征在于:上述选择装置根据从上述图像信息所获得的灰度信息来决定选择成像数据的次数K。 The color panel as claimed in claim 4, wherein the display device, wherein: said selecting means determines the number of selected image data according to the gradation information of the image information obtained K.
6.根据权利要求4所述的彩色平板显示装置,其特征是,上述显示装置是STN方式的液晶显示装置。 6. A color panel display device according to claim 4, wherein said display means is a liquid crystal display device of STN mode.
7.一种彩色平板显示装置,该装置包括:由根据图像信息而驱动来变化透光率的多个像素所构成的显示部和可以根据该图像信息分别独立地进行通断控制的R、G、B各色背光光源,其特征在于,包括:把彩色图像信息变换成以预定时间周期依次切换R、G、B各色图像信息的串行数据的装置;把上述各时间周期内的R、G 、B各色的串行数据并行展开为所要求的全灰度数(L)的第一数据总线装置;通过对预定范围内的M×N个像素分别依次地把对应于各像素的L个并行数据同时写入L个地址,来存储由M×N个像素信息所组成的L个成像数据的存储装置;从上述存储装置把在读出成像数据中所要求的灰度数(K)的成像数据分别每次读M个像素信息分N次读出的第二数据总线装置;以及由所读出的K个成像数据对预定范围内的M×N个像素在上述时间周期内进行K次驱动的驱动装置。 A color panel display device, the apparatus comprising: a drive to change the display section according to image information by a plurality of pixels composed of light transmittance according to the image information and can independently perform on-off control R, G, , and B colors of the backlight light source, characterized by comprising: the color image information into a predetermined period of time to R, G, and B colors of the serial data in the image information are sequentially switched; R in each of the time periods, G, B colors serial data in parallel to expand the number of all the gradations as requested (L) of the first data bus means; by the M × N pixels in a predetermined range are sequentially to each pixel corresponding to the parallel data L L simultaneous writing addresses, stored in the storage means to the L imaging data by the M × N pixel information thereof; from said storage means to read out the number of gradations required imaging data (K) imaging data M, respectively, each second data bus means for reading out pixel information read divided N times; and by plotting data of K as read out of the M × N pixels in a predetermined range K times within said time period of the drive drive means.
8.根据权利要求7所述的彩色平板显示装置,其特征是,上述显示装置是STN方式的液晶显示装置。 Color panel according to claim 7 of the display device, wherein said display means is a liquid crystal display device of STN mode.
9.一种图像信息的处理方法,其特征在于,当通过具有区域不同的至少三个地址的存储器来处理图像信息时,仅使并行展开的数据区的地址为全地址有效,由剩余的地址并行处理所指定的数据。 9. A method of processing image information, wherein, when the image information is processed through a memory having at least three different regions of the address, only the address of the data area to expand parallel full address is valid, the remaining addresses parallel processing the specified data.
10.根据权利要求9所述的图像信息的处理方法,其特征是,在写入操作时和读出操作时,成为全地址有效的数据区不同。 10. The image information processing method according to claim 9, characterized in that, when during the writing operation and the reading operation, the full address becomes different effective data area.
CN 95120503 1994-10-24 1995-10-23 Colour plane plate display device and image information processing method CN1133463A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP28438794 1994-10-24
US08/546,330 US6078304A (en) 1994-10-24 1995-10-20 Panel type color display device and system for processing image information

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US6577292B1 (en) 2003-06-10
EP0709823A2 (en) 1996-05-01
CA2161184A1 (en) 1997-04-24
EP0709823A3 (en) 1997-10-22
US6078304A (en) 2000-06-20

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